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Hot Water vs Cold Water Pressure Washers

Pressure washers can be categorized in several different ways: electric, gas-powered, residential or commercial. There is also another classification, and that’s cold or hot water pressure washers. Apart from the temperature of water they use, they differ in several other areas as well. Of course they both have their pros and cons, and knowing more about each will help you make a better decision.

Cold Water Pressure Washers

Unlike residential high pressure washers, cold-water pressure washers are designed for continuous use in commercial and industrial applications.
There are plenty of reasons why they are so popular, but the most important reason is probably that, when compared to their hot water counterparts, they are much cheaper and simpler in their construction (especially electric models).

Also, cold water pressure washers are a lot more practical due to their smaller dimensions which make them easier to move around. As far as maintenance goes even gas-powered pressure washers are a lot easier to maintain than the equivalent hot water designs.

Cold water pressure washers rely on the mechanical force of a pressurized water jet to dislodge dirt from the surface that needs to be cleaned. This force is usually enough to break down most impurities, but they are less efficient when it comes to tackling oily or greasy stains that can be found on hard surfaces such as garage floors, pavements and driveways. The use of detergents helps out a bit on some of the less tough stains, but oil and grease are often too much to handle for most cold pressure washers.

Cold water power washers rely on high-pressure water jets to remove dirt, and the higher the PSI and GPM number, the more powerful the pressure washer is.

Hot Water Pressure Washers

You’ll want to make sure you choose a hot water pressure washer or industrial power washer if the surface you are cleaning contains any type of grease, grime or oil. Just like doing your dishes, cold water only moves oil around, but doesn’t clean it away. Hot water pressure washers and industrial power washers are heated with fuel oil, diesel, natural gas or propane, and are designed to blast away tough grease & grime.

Hot water pressure washers have the ability to produce steam which comes in really handy if you want to get surfaces spotless to the point where they’re germ free. However, a hot water and high pressure combo is more effective than just steam. You may also notice that hot water pressure washers have a lower PSI than gas-powered pressure washers.

As far as the cons for hot water pressure washers go? They are big, bulky and thanks to their complex design, more complicated to maintain. They are also more expensive.

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